The Iranian minister's visit, along with Saudi-American communications at defence ministry level, are part of a coordinated effort to address the crisis, a Gulf source close to government circles told Reuters.
A person in Washington familiar with the discussions confirmed that Gulf officials had been in touch with U.S. counterparts to express concern about the potential scope of Israel's expected retaliation.
The White House declined comment when asked whether Gulf governments had asked Washington to ensure Israel's response was measured. U.S. President Joe Biden and Israeli Prime Minister Benjamin Netanyahu spoke on Wednesday about the
Israeli retaliation in a call both sides described as positive.
Jonathan Panikoff, former deputy U.S. national intelligence officer on the Middle East and now at the Atlantic Council think-tank in Washington said: "Gulf states' anxiety is likely to be a key talking point with Israeli counterparts in trying to convince Israel to undertake a carefully calibrated response."
The Organization of Petroleum Exporting Countries, OPEC, which is de-facto led by Saudi Arabia, has enough spare oil capacity to make up for any loss of Iranian supply if an Israeli retaliation knocked out some of the country's facilities.
But much of that spare capacity is in the Gulf region so if oil facilities in Saudi Arabia or the UAE, for example, were targeted too, the world could face an oil supply problem.
Saudi Arabia has been wary of an Iranian strike on its oil plants since a 2019 attack on its Aramco oilfield shut down over 5% of global oil supply. Iran denied involvement.
Riyadh has had a rapprochement with Tehran in recent years, but trust remains an issue. Bahrain, Kuwait, Qatar, Saudi Arabia and the UAE all host U.S. military facilities or troops.
Concerns over oil facilities and the potential for a wider regional conflict were also central to talks between Emirati officials and their U.S. counterparts, said another Gulf source.
In 2022, the Iran-aligned Houthis in Yemen fired missiles and drones at oil refuelling trucks near an oil refinery owned by UAE's state oil firm ADNOC and claimed the attack.
"The Gulf states aren't letting Israel use their airspace. They won't allow Israeli missiles to pass through, and there's also a hope that they won't strike the oil facilities," the Gulf source said.
The three Gulf sources emphasized that Israel could route strikes through Jordan or Iraq, but using Saudi, UAE, or Qatari airspace was off the table and strategically unnecessary.
Analysts also pointed out that Israel has other options, including mid-air refuelling capabilities that would enable its jets to fly down the Red Sea into the Indian Ocean, proceed to the Gulf and then fly back.
According to two senior Israeli officials, Israel is going to calibrate its response and, as of Wednesday, it had not yet decided whether it would strike Iran's oilfields.
The option was one of a number presented by the defence establishment to Israeli leaders, according to the officials.
Israeli Defence Minister Yoav Gallant said on Wednesday: "Our strike will be lethal, precise, and above all - surprising. They will not understand what happened and how it happened. They will see the results."
The three Gulf sources stated that Saudi Arabia, as a leading oil exporter along with oil-producing neighbours - the UAE, Qatar, Kuwait, Oman and Bahrain - had keen a interest in de-escalating the situation.
"We will be in the middle of a missile war. There is serious concern, especially if the Israeli strike targets Iran's oil installations," a second Gulf source said.
The three Gulf sources said an Israeli strike on Iran's oil infrastructure would have a global impact, particularly for China - Iran's top oil customer - as well as for Kamala Harris ahead of the Nov. 5 presidential election in which she is running against Donald Trump.
"If oil prices surge to $120 per barrel, it would harm both the U.S. economy and Harris' chances in the election. So they (Americans) won't allow the oil war to expand," the first Gulf source said.
Gulf sources said safeguarding all oil installations remained a challenge, despite having advanced missile and Patriot defence systems, so the primary approach remained diplomatic: signalling to Iran that Gulf states pose no threat.
Bernard Haykel, professor of Near East Studies at Princeton University, noted that Riyadh was vulnerable "because the Iranians can swarm those installations given the short distance from the mainland".
Source: Reuters